From: Peter Hickman <peter@...>
Date: 2007-07-19T00:01:03+09:00
Subject: Re: type conversion

Shandy Nantz wrote:
> Sorry about not giving code. I did finally get it to work, but here is 
> what I had to do:
>
> card_num = "123456789"
> c = 0
>
> char = card_num[i..i].to_i
>
> before I had:
>
> char = card_num[i].to_i
>
> All I wanted to do was to pick out a single character (a digit) from 
> that string and perform some calculations on it. But by just saying [i] 
> I got a 57 value when I wanted the 9 value. When I said [i..i] I got the 
> 9 value. Thanks for all your help,
>
> ~S
>
>   
Card_num[i] is returning the character value at position i.

card_num[i].chr will return the character at position i

card_num[i].chr.to_i will return the integer value of the character

card_num[i].type => Fixnum

card_num[i..i].type => String and is why card_num[i..i].to_i worked